Why’d the Ocean Stop Getting Saltier?

The video explores why oceans are salty, explaining that rain erodes salts from rocks, which rivers carry to the sea. While rivers add salt, evaporation doesn't remove it, maintaining ocean salinity. Historical theories, like Edmond Halley's, miscalculated Earth's age based on salinity. Salinity is balanced by processes like evaporation and hydrothermal vents. Local salinity varies due to factors like rain and ice. Climate change affects salinity, with NASA's Aquarius satellite monitoring these changes to understand their impact on climate.

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